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Visualiser - A/B Tester - Mixdown & Mastering Assistant

These installers will provide you a 30 day demo which runs for 30 minutes per session. To get a full license, click the Buy Now button below.

Purchase Compere - £49.99

Purchase Compere - £49.99

Payment will be made via PayPal. On receipt of payment, a unique unlock key will be emailed to you.


Compère is an A/B testing visualiser plugin, with a few extra tricks up its sleeve.

Geared towards fast switching and straightforward visualisation of source and reference input signals. Can’t quite put your finger on what’s missing from your mix down? Compère can help show you.

Simply place Compère on your master channel, send a reference ghost track to the side chain input, adjust the reference trim to match the source and enjoy immediate A/B comparison between the two.

Two oscilloscopes and two spectral displays are at the heart of Compère. The oscilloscopes can be synchronised the host tempo, ranging from zoomed out to 16 bars for a wide tracking overview, right down to a single beat for detailed work. Two spectral displays show you what the frequencies are doing, and with adjustable decay rate and number of bands you can tune it to your own preferences.

Moving the mouse over the visualisation areas brings up crosshairs to show you exactly the frequency, note and amplitude information for that pixel, duplicated to the other channel for ease of use. Both displays can be frozen at the click of a button, or just freeze the reference channel for a visual snapshot.

Blind mode A/B testing is possible by clicking the blind button, which disables the visualisers, mutes the output for a moment to let your ears reset, and then selects one of the input signals at random.

Stereo volume meters and a dynamics section with Peak, RMS and Crest readouts show you the dynamic range of your input signals, with an adjustable window for taste.

The output is switchable between mono and stereo and the left and right channels can be swapped to highlight any phasing or stereo image imbalance.

Finally, an optional low-pass filter is applied to the master output, tuned for checking those bass frequencies so you can focus on what’s going on in the low end.

Compère can be freely resized to match your available space, leaving screen estate for other plugins or stretching across an entire monitor.


  • Single A/B button to instantly switch between source and reference channels
  • Twin oscilloscope and spectral displays for side by side comparison
  • Mouseover crosshairs on oscilloscope and spectral displays, with information duplicated on both panes
  • Single view mode to use Compère as a track visualiser, all other features remain available
  • Fully resizable interface
  • Oscilloscopes free running or syncable to the host BPM
  • Freeze displays for both channels or just the reference
  • Accurate Peak/RMS/Crest meters
  • 12dB low-pass filter for focussing on the low end
  • Quick crossfades to prevent unwanted pops and clicks
  • Mono/Stereo mode and left/right channel swapping to check your stereo image
  • Blind testing mode with adjustable silence length
  • Optimised for low CPU usage
  • Designed to be clean, inobtrusive and quick to use.

Different colour schemes to suit your preference. 3 shades for the background and black/blue for the display areas.


Single view for use as track visualiser. All other features are available in this mode.


Global Preferences window for extra customisation.

System Requirements

  • Mac OSX 10.6 or above
  • Windows 7 or above
  • VST or AU compatible audio host with sidechain functionality.
  • 1024 x 768 monitor

Available plugin formats:

  • Windows (32-bit & 64-bit: VST2, VST3)
  • Mac OSX (32-bit & 64-bit: VST2, VST3, AU)

(AAX & RTAS formats planned for future release)

VST and VST3 are trademarks of Steinberg Media Technologies GmbH.
Audio Unit is a trademark of Apple, Inc.
RTAS and AAX are trademarks of Avid, Inc.

Compère is © Copyright Bogus Noise 2017

Update Log

v1.0.0 - 18th December 2017

v1.0.1 - 20th December 2017
  • Added frequency scale to Spectral displays
  • Fixed crash on open affecting new installs of OSX version
  • A few minor code tidy ups and optimisations.

v1.0.5 - 4th March 2018
  • Fixed an issue where window size could reset on host play
  • Window size now properly recalled with host projects
  • Resizing now available on VST2 OSX
  • Added time scale to wave displays
  • Crosshairs and crosshair info no longer duplicated across instances
  • Added ‘paste’ button beside serial entry box
  • Other minor fixes, tweaks and optimisations

v1.1.0 - 10th September 2018
  • Added Monitor Split option for setting B Input Trim
  • Blind mode delay fixed
  • Phase invert fixed
  • Tweaked colours of the Oscilloscope and Spectral Display scales to aid visibility, particularly for waveform peaks
  • FFT overlap maximum value increased to 99%
  • Preferences Window can now be moved around the interface
  • Removed subdivision ticks from around the Sync Mode Scope Range knob
  • Tidied and optimised oscilloscope performance and look at high zoom levels
  • GUI no longer broken on Retina displays (true Retina compatibility to be added later)
  • Added slower/held analysis to background of Spectral Display
  • Fixed a couple of glitches in the FFT display
  • Spectral Display can now display amplitudes down to -196dB
  • Added rubber band feature to Oscilloscope to show length of selection in milliseconds
  • Added cents to Spectral Display pitch readout

v1.2.0 - 22nd November 2018
  • No longer fades audio in when plugin is first inserted into slot
  • Match reference to source Peak level button added
  • Match reference to source RMS level button added
  • Latency compensation for A channel, to aid use of beat sync mode
  • RMS Window maximum size increased to 3000ms
  • RMS detection corrected
  • Crest factor removed, now shows separate Absolute and Continuous RMS
  • Waveform is no longer inverted when display is zoomed out
  • Added option to change Spectral Display mode between Summed, Left/Right and Mid/Side modes